HarmonyOS 鸿蒙Next模拟器唤起相册后不显示图片，但已上传照片

HarmonyOS 鸿蒙Next模拟器唤起相册后不显示图片，但已上传照片

let picker = new photoAccessHelper.PhotoViewPicker()  //唤起对话框，获得图片uri
    let options:photoAccessHelper.PhotoSelectOptions = {
      MIMEType:photoAccessHelper.PhotoViewMIMETypes.IMAGE_TYPE,
      maxSelectNumber:1  //选择图片的个数
    }
    picker.select(options).then((value:photoAccessHelper.PhotoSelectResult)=>{
      //选择图片的地址
      let uri = value.photoUris[0]
      //将文件内容转换成base64
      let file = fileIo.openSync(uri,fileIo.OpenMode.READ_WRITE)
      //获得文件的字节个数
      let size = fileIo.statSync(file.fd).size;
      let buffer = new ArrayBuffer(size)
      //将图片字节读入buffer
      fileIo.readSync(file.fd,buffer);
      let helper = new util.Base64Helper();
      let str = helper.encodeToStringSync(new Uint8Array(buffer))
      console.log(str)